Dankmemer541 pusi plz answer 2 plus 2 is 4
2 answers:
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Answer:
Step-by-step explanation:
Given
Required
Solve by elimination
To do this, we subtract both equations (to eliminate x)
-
--------------------
Substitute in
Solve for 3x
Solve for x
Answer:
60 & 55
Step-by-step explanation:
1. the sum of the angles 1; 2 and 3 is 180°, then
m∠1=m∠2=m∠3; ⇒m∠3=60°;
2. m∠3=m∠r; ⇒ m∠r=60°;
3. m∠α= 180-(m∠r+65°)°; ⇒ m∠α=55°
all the details are in the picture.
